How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Mike Your Own Question

Mike
Mike, ASE Certified Technician
Category: Renault
Satisfied Customers: 38850
Experience:  34 years of vehicle repair / diagnostics
9261905
Type Your Renault Question Here...
Mike is online now
A new question is answered every 9 seconds

1998 renault: new timing belt, 2 new coil packs..high pitched..firing

Resolved Question:

hi I got a 1998 renault scenic 1.6 16v mpv and I have a problem starting the car after it has just had a new timing belt, 2 new coil packs and a new water pump. when I turn the key all I get is a high pitched whiring sound as if only the flywheels are spinning but there is no firing happening. can you help please??
Submitted: 3 years ago.
Category: Renault
Expert:  Mike replied 3 years ago.

Mike :

Hello and Welcome to justanswer...

Mike :

Can I just ask - why was the belt changed - service renewal - or had it broken?

Customer:

service renewal and just had the car a couple of months

Customer:

service renewal and only had the car a couple of months

Mike :

thank you - Im going to need to ask a few questions you understand to help you properely...

Customer:

ok

Mike :

Who did the belt job for you ?

Customer:

a friend who had the car before us and he repaired the engine before

Customer:

the coil packs needed replacing due to high emissions, mixture out and constant juddering

Mike :

Ok - and did those things cure the judderingf etc?

Mike :

Ok - and did those things cure the juddering etc?


Customer:

im not sure i changed the coils whie waiting for a replacement water pump as the water pump broke while we were tightening up then tension on the belt

Customer:

so cant tell if they are working i know they are brand new coils i had them from ebay sold as new

Mike :

ok no problem - what is the Full reg of the car?

Customer:

i did disconnect the safety cut off before i did the coils

Customer:

S438 VAX

Mike :

ok no problem - what is the Full reg of the car?


Mike :

thank you - give me a min to bring your car up

Customer:

OK

Mike :

ok I have that - do you happen to know the engine code?

Customer:

k7m02

Mike :

excellent - most people have no clue ! Give me a mo

Customer:

i looked it up on the engine so i got the correct parts

Mike :

ok - was the engine turned without the belt tight - ? perhaps when you had the water pump prob.. or at any other time?

Customer:

i did have trouble with the tension before the pump snapped as the tensioner became slack slightly when i took it for a test drive

Customer:

it has been standing for a week since the trouble started

Mike :

Ok- this is important - because if that happened - you may well have bent the valves - it doesnt take much ! Has it been checked for spark and fuel present - fuel up to the engine - and being injected ?

Customer:

it has got a full tank of petrol and plugs were changed about a month ago

Customer:

there is no spark getting to the plugs

Mike :

ah - no spark ... what about fuel...to the engine and being injected... and has the fue cut off switch been checked>

Mike :

?

Customer:

i don't think valves are bent because when i arrived home i turned the engine off waited a couple of minutes then fire it up again and left her running idle to look at the belt

Mike :

ok.. what about the other q.. I asked? ;)

Customer:

the cut off switch hasn't been checked can you tell me where this is located please?

Customer:

there is a safety cut off under the bonnet could that be it?

Mike :

yes - it will have a rubber cap - about 1" in size... if there is no fuel up - press it - it will click if it sbeen activated... Now - no spark?

Customer:

I did press it a number of times but with no luck

Customer:

do you think it has gone?

Mike :

If you have no spark - its not going to run - ever. You need to check the connections to your coil... But - if that ok.. check the connections to the CAS -- Crank sensor. If they are ok - renew the Crank sensor. Common fault -and Renault have introduced a new upgraded type - to cure probems such as you have ;)

Mike :

No I doubt that ... I think as above -

Customer:

the connections are all ok I could try replacing the safety switch

Mike :

no ... because that woudnt cut your spark.

Mike :

If all your connections are ok - it will be a failed CAS as above - extremely common fault on these.. Check the colour even - if its black, its the old style one - New types are blue - and come with a new connector and piece of loom..

Mike :

This is to cure these no spark probems on these. That will be your fault !

Mike :

Did you read the above - the para re the CAS?

Customer:

thank you for this advice I will get that replaced as soon as i can

Mike :

No probem at all - you know where it is ??

Customer:

i'm not sure can you please help me to locate the sensor?

Mike :

No problem - Its fastened to the very top of the transmission casing - where it abutts to the engine - you wi need to move pipes and wires etc - (take air pipe off).. to see / get at it - Its hed by 2 x 10mm bolts - unclip its wire - and undo the bolts and withdraw it - Its failry easy. As I say, Renault supply a new - blue updated type to cure these failing spark issues - the kit is about 50£. when you fit the new one - you have to splice the wires in - do them one at a time so as not to get mixed up (theres only two)

Mike :

If it doesnt spark up first time - swap the wires over ( they are not coded - they are white.. so its easy to get them wrong!)... so dont tape them up until you know it sparks up / starts ;)

Customer:

ok thank you very much

Mike :

No problem at all... Im very pleased to have helped you -

Please click the Accept button for me - Thank You ....and if you do need / wish to get back to me after - you can do so just by coming back to this post and use the Reply button - your reply will then come straight back to me .. and Im always happy to help further....
Please note , you need to press the Accept button even if you are a subscriber to justanswer - thank you again.


Mike :

Please dont forget the accept for me - as thats how I get credited for helping you .. Thank you again. Best Rgds - MIKE

Mike, ASE Certified Technician
Category: Renault
Satisfied Customers: 38850
Experience: 34 years of vehicle repair / diagnostics
Mike and other Renault Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • I. Silva

    Technician

    Satisfied Customers:

    25
    30 yrs. experience in all makes and models.
< Last | Next >
  • http://ww2.justanswer.com/uploads/CO/conquest.tsi/2012-2-13_19143_Woodbridge2012020900096.64x64.jpg I. Silva's Avatar

    I. Silva

    Technician

    Satisfied Customers:

    25
    30 yrs. experience in all makes and models.
  • http://ww2.justanswer.com/uploads/NA/nabilc/2011-1-24_205715_jap500.64x64.jpg Billy's Avatar

    Billy

    Trainer/Master tech.

    Satisfied Customers:

    23
    Trainer 8+ years, master tech. 10+ years, SAE member
  • http://ww2.justanswer.com/uploads/GazzaR1964/2009-06-03_115816_meingarden.jpg GazzaR1964's Avatar

    GazzaR1964

    Auto Mechanic

    Satisfied Customers:

    18
    I have been a self employed mechanic and MOT tester for almost 30 years.
  • http://ww2.justanswer.com/uploads/FO/fordtwo/2014-12-19_163422_arrepair.64x64.jpg Robert's Avatar

    Robert

    Renault Mechanic

    Satisfied Customers:

    139
    Fully trained 19+yrs exp/self employed technician in the UK
  • /img/opt/shirt.png rickyrenault's Avatar

    rickyrenault

    Renault Technical Expert

    Satisfied Customers:

    59
    I have worked at Renault cars for ten years
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    916
    16 years of experience
 
 
 
Chat Now With A Renault Mechanic
Mike
Mike
Proprieter / Diagnostic Technician
534 Satisfied Customers
34 years of vehicle repair / diagnostics